News That Matters

Tag: hole

Black hole swallowing and ripping apart star captured for first time

Black hole swallowing and ripping apart star captured for first time

Technology
A gigantic black hole has been captured pulling in and ripping apart a star for the first time.The star, which was about the same size as our sun, was seen from 375 million light years away warping and spiralling into the gravitational pull of a supermassive black hole, researchers said in the Astrophysical Journal. It was then sucked into oblivion in a rare cosmic occurrence astronomers call a tidal disruption event.NASA's planet-searching telescope, the Transiting Exoplanet Survey Satellite - TESS - captured the detailed timeline from beginning to end for the first time. Image: The supermassive black hole swallowed up and destroyed a star the size of the Earth's sun Pic: Nasa graphic Astronomers used a worldwide network of telescop...
Astronomers find star recently ripped apart by black hole

Astronomers find star recently ripped apart by black hole

Science
Sept. 26 (UPI) -- NASA's Transiting Exoplanet Survey Satellite has spotted the remnants of a star that was recently shredded by a supermassive black hole -- a first. Astrophysicists and cosmologists estimate supermassive black holes are located at the center of most galaxies. When stars wander too close, a black hole's tremendous gravitational pull can rip it apart. The violent interaction is known as a tidal disruption event, or TDE. Scientists can come to better understand the dynamics of black holes by studying the spectral signatures of TDEs. The tidal disruption event ASASSN-19bt was first spotted by an international network of telescopes called the All-Sky Automated Survey for Supernovae. TESS was able to observe the TDE, as well, providing complementary images of the event. When ...
Team plans colour film of black hole at galaxy’s centre

Team plans colour film of black hole at galaxy’s centre

Science
The team that took the first ever image of a black hole has announced plans to capture "razor sharp" full colour video of the one at the centre of our galaxy.Satellites would be launched to supplement the existing network of eight telescopes to make this movie.The researchers say the upgraded network will be able to see the supermassive black hole consuming the material around it. The team has been awarded the Breakthrough Award for Physics.Prof Heino Falcke, of Radboud University in the Netherlands, who proposed the idea of the so-called Event Horizon Telescope (EHT), told BBC News that the next step was to see a black hole in action."Just like planets, a black hole rotates. And because of its incredibly strong gravity, it disto...
Supermassive black hole found to be one of largest-ever discovered

Supermassive black hole found to be one of largest-ever discovered

Technology
By Catrin Rutland, news reporter A supermassive black hole has been found to be up to nine times larger than previously expected - making it one of the biggest-ever discovered.The black hole in the Holmberg 15A galaxy has a mass nearly 40 billion times larger than the Sun and is the biggest to be measured using a method called direct dynamical detection. In comparison, images recently captured of another one in the centre of the M87 galaxy showed it was 6.5 billion times bigger than the Sun. Image: The black hole within the M87 galaxy was the first to be photographed - it is 6.5 billion times bigger than the Sun Our galaxy, the Milky Way, is likely to have its own supermassive black hole with an ...
YouTube: ‘We don’t take you down the rabbit hole’

YouTube: ‘We don’t take you down the rabbit hole’

Technology
Media playback is unsupported on your device YouTube has defended its video recommendation algorithms, amid suggestions that the technology serves up increasingly extreme videos.On Thursday, a BBC report explored how YouTube had helped the Flat Earth conspiracy theory spread.But the company's new managing director for the UK, Ben McOwen Wilson, said YouTube "does the opposite of taking you down the rabbit hole".He told the BBC that YouTube worked to dispel misinformation and conspiracies.But warned that some types of government regulation could start to look like censorship.YouTube, as well as other internet giants such as Facebook and Twitter, have some big decisions to make. All must decide where they draw the line between freedom of express...